Funding for this research was provided by:
Vetenskapsrådet (2014-5234, 2012-4375)
National Science Foundation (1636625)
Deutsche Forschungsgemeinschaft (KR2125/3)
SYNTHESYS (AT-TAF 467)
Article History
Received: 4 February 2017
Revised: 20 April 2017
Accepted: 15 May 2017
First Online: 20 July 2017
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.